Integrated InP-based transmitter for continuous-variable quantum key distribution

被引：1

作者：

Aldama, J. ^{[1
]}

Sarmiento, S. ^{[1
]}

Vidarte, L. trigo ^{[1
]}

Etcheverry, S. ^{[1
]}

Grande, I. LoPEZ ^{[1
]}

Castelvero, L. ^{[1
]}

Hinojosa, A. ^{[2
]}

Beckerwerth, T. ^{[3
]}

Pietri, Y. ^{[4
]}

Rhouni, A. ^{[4
]}

Diamanti, E. ^{[4
]}

Pruneri, V. ^{[1
,5
]}

机构：

[1] Barcelona Inst Sci & Technol, ICFO Inst Ciencies Foton, Castelldefels 08860, Barcelona, Spain

[2] Univ Politecn Valencia, VLC Photon SL, Ed 9B-D2,Camino Vera s-n, Valencia 46022, Spain

[3] Fraunhofer Heinrich Hertz Inst HHI, Einsteinufer 37, D-10587 Berlin, Germany

[4] Sorbonne Univ, CNRS, LIP6, 4 Pl Jussieu, F-75005 Paris, France

[5] ICREA Inst Catalana Recerca & Estudis Avancats, Barcelona 08010, Spain

来源：

OPTICS EXPRESS | 2025年 / 33卷 / 04期

基金：

欧盟地平线“2020”;

关键词：

SECURITY;

D O I：

10.1364/OE.550386

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Developing quantum key distribution (QKD) systems using monolithic photonic integrated circuits (PICs) can accelerate their adoption by a wide range of markets, thanks to the potential reduction in size, complexity of the overall system, power consumption, and production cost. In this work, we design, fabricate and characterize an InP-based PIC transmitter for continuous-variable (CV) QKD applications. In a proof-of-principle experiment implementing a pulsed Gaussian-modulated coherent state (GMCS) CV-QKD protocol over an optical fiber channel of 11 km, the system showed a performance compatible with a secret key rate of 78 kbps in the asymptotic regime. These results show the potential of InP technologies to integrate CV-QKD systems onto a monolithic platform. (c) 2025 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

引用

页码：8139 / 8149

页数：11

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